Model
Nfera Su1
Solus KL21
Tire Sizes
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The competing tires may come in different numbers of sizes. You may compare the identical and alternative tire sizes.

205/40 R17
195/45 R15
195/45 R16
205/40 R16
205/45 R16
225/50 R16
205/40 R17
205/45 R17
215/40 R17
215/45 R17
215/55 R17
225/45 R17
235/40 R17
235/45 R17
245/40 R17
255/40 R17
275/40 R17
215/35 R18
215/40 R18
225/35 R18
225/40 R18
225/45 R18
235/40 R18
245/35 R18
245/40 R18
255/35 R18
255/45 R18
265/35 R18
275/35 R18
225/35 R19
225/40 R19
235/35 R19
245/35 R19
245/40 R19
255/35 R19
255/40 R19
265/30 R19
275/30 R19
225/30 R20
225/35 R20
235/30 R20
245/30 R20
245/35 R20
255/35 R20
275/30 R20
275/35 R20
245/30 R22
265/30 R22
225/60 R17
225/60 R17
225/65 R17
235/65 R17
235/60 R18
245/65 R18
265/60 R18
Tread Photos
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Inspect the tread pattern of the rubber.

Nfera Su1
Solus KL21
Price range
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The estimated price range may vary from cheap rubber to expensive or premium tires.

Brand
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Click in the brand name to learn more about their tires and strong sides.

Nexen
Kumho
Category
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Each tire belongs to a specific category. If both tires fall into different categories, choose the type that best fits your needs.

Touring -> All Season -> Crossover/SUV Touring All-Season
Review
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Read a detailed review of each tire if you are still hesitating which option you should choose.

Read more >

As a proud owner of a Hyundai Tucson crossover, I was looking for a tire that would provide me with exceptional all-season performance. After researching different options, I decided to give the Kumho SOLUS KL21 a try. As a busy dad, I need a tire that can handle any road condition, and the SOLUS KL21 seemed like the perfect choice.

After 10 000 miles driving in my new “shoes” I am impressed by the tire's symmetric bamboo-inspired tread design which helps to reduce rolling resistance and improve grip in wet and winter conditions. But what really sold me on the SOLUS KL21 was its excellent ride comfort and low noise levels.

In this blog post, I'll share my experiences with the Kumho SOLUS KL21 and explain why I think it's the ultimate all-season tire for crossover and SUV drivers.

Pros Good dry and wet traction Smooth and quiet ride Good gas mileage Good tread life Good handling and stability Affordable Cons Poor traction in snow and rain Inconsistent tire wear Poor warranty and support from Kumho Technical Features

The Kumho SOLUS KL21 is an all-season tire designed for use on crossover and SUV vehicles. It offers year-round handling and traction, even in light snow. The tire uses a High Dispersible Silica (HDS) tread compound that reduces rolling resistance and promotes even wear.

The symmetric bamboo-inspired tread design provides traction in dry, wet, and light winter conditions. The tire's internal structure features twin steel belts reinforced by nylon for strength and low rolling resistance, and a High Intensity Body Ply that reduces heat generation and energy losses.

Some sizes of the SOLUS KL21 meet Kumho's eco standard for low rolling resistance, which indicates the tire's contribution to reducing vehicle fuel consumption and CO2 emissions.

How long does Kumho SOLUS KL21 tire last?

The Kumho SOLUS KL21 tire has a treadwear warranty of 6 years or 60,000 miles. The warranty covers the first 2/32" of wear, and the tire will be replaced for free during this period. After the first 2/32" of wear, the warranty will be prorated based on the remaining depth of the tire's tread.

The warranty does not cover road hazards or other special warranties. It is important to note that the warranty may vary depending on the date of purchase and other factors, so it is best to consult the manufacturer's warranty brochure or contact the manufacturer directly for more information.

Fun Facts

Having assessed the hundreds of the consumer reviews, I have seen that the average distance in miles driven on the Kumho SOLUS KL21 tire is approximately 44,000 miles.

The top-3 vehicles most frequently mentioned in the consumer reviews are the Hyundai Santa Fe, Kia Sorento, and Kia Sportage.

How It Performs on Wet Roads

Based on the consumer reviews, the Kumho SOLUS KL21 tire appears to perform well on wet roads. However, I know people complaining that the wet traction and hydroplaning resistance tend to decrease significantly after 40,000 miles of use.

How It Performs on Dry Pavement

Having a firm dry traction, the Kumho SOLUS KL21 tire also offers good cornering stability and steering response on dry surfaces. This allows the driver to maintain control of the vehicle and navigate corners and other challenging road conditions with confidence.

However, the tire's performance may vary depending on the specific driving conditions and the individual driver's style. It is important to regularly check the tire's tread depth and wear indicators to ensure that it is still in good condition and safe to use on dry roads.

Driving Comfort

The ride quality is generally good, it absorbs bumps and other road imperfections well. The Kumho SOLUS KL21 tire is not particularly noisy. Although it does not produce excessive road noise, it certainly would not win the prise for the quietest ride.

According to the manufacturer, the tread pattern was specifically designed to reduce road noise, and the tire's internal structure helps to reduce heat generation and energy losses, which can further improve its noise levels.

Overall, the Kumho SOLUS KL21 tire appears to be a good option for drivers like me who want a tire that provides good performance without generating excessive road noise.

How It Behaves on the Snow & Ice

The SOLUS KL21 is not specifically designed for use in winter weather or on icy roads. However, it may not provide the same level of grip and traction in snowy conditions as a dedicated winter tire.

Summary

The Kumho SOLUS KL21 tire is a great option for those sitting on a tight budget but looking for an all-season tire that provides good performance. As you can see, its performance may not be ideal for icy roads or when driving in deeper snow. Overall, the Kumho SOLUS KL21 tire is a great choice for the budget-conscious driver who wants a reliable all-season tire that provides good overall performance.

Read more >

Tires Scores Compare

How we score

Would You Recommend?

N/A
N/A

Treadwear Performance

N/A
6.2

Treadwear is vital to many things, not just how often the tires need replacement. Hydroplaning and wet weather are both critical factors that wear down your tire quickly. The warranty covers any defects in what you bought but only for a limited period or when there's minimal tread left on them.

Wet Perfomance

N/A
7.1

The wet performance score is a new thing that tire manufacturers are trying to achieve. The hydroplaning resistance, wet traction, and steering response all influence this new grading system.

Hydroplaning Resistance
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The hydroplaning resistance is measured by the hydroplane depth test and the dynamic aquaplaning test, which measures how much water can be accumulated on the tire's surface before hydroplaning occurs.

7
Wet Traction
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Wet traction estimates the level of grip on wet pavement. Tread design with deep grooves dramatically improves confidence when driving in the rain as they channel the water out much better.

7.1
Steering Response
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The vehicle's steering response largely depends on the tread depth, tire width, air pressure, and aspect ratio. Wide high-performance tires are equipped with a continuous center rib providing instant steering response.

7.7

Dry Perfomance

N/A
7.6

Tires with good dry performance should be able to perform smoothly and safely, even when cornering aggressively.

Cornering Stability
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A dynamic cornering test is often used to assess cornering stability under dry conditions.

7.5
Dry Traction
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Dry traction level depends on many factors, including tread design, profile shape, and compounds.

7.5
Steering Response
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The vehicle's steering response largely depends on the tread depth, tire width, air pressure, and aspect ratio. Wide high-performance tires are equipped with a continuous center rib providing instant steering response.

7.7

Comfort Perfomance

N/A
7.3

The comfort performance score is designed to measure the balance between ride quality and noise level.

Ride Quality
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The excellent ride quality means you do not feel the bumps or cracks on the road. Larger tires with thick and deep tread patterns decrease the number of jolts allowing you to glide over bumpy road textures.

7.3
Noise
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If you would enjoy a quiet chat with the passengers while children are sleeping or listening to music, not the sound of tires, definitely pay attention to the noise score.

7.3

Winter Performance

N/A
4.4

Winter Performance score helps us understand if the tire is the appropriate option for winter conditions that your vehicle will face. Dedicated winter tires provide a firm grip when driving through snow and on ice. Performance winter tires boast a higher speed rating and better handling but deliver modestly lower ice and snow traction.

Light Snow Traction
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Snow traction is the ability of a tire to push snow out of its path. When driving on packed snow, tires with good snow traction will help you accelerate and maintain control.

5.1
Deep Snow Traction
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Deep Snow Traction test results compare how the tires deal with the deep snow. To successfully cope with the job, such tires should feature aggressive tread patterns, a tremendous amount of siping, and most elastic compounds.

4.1
Ice Traction
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Ice traction tires feature ice grip and build friction when using the brakes or steering wheel to get through icy surfaces safely.

3.9
Price range
Tire Sizes
205/40 R17
195/45 R15
195/45 R16
205/40 R16
205/45 R16
225/50 R16
205/40 R17
205/45 R17
215/40 R17
215/45 R17
215/55 R17
225/45 R17
235/40 R17
235/45 R17
245/40 R17
255/40 R17
275/40 R17
215/35 R18
215/40 R18
225/35 R18
225/40 R18
225/45 R18
235/40 R18
245/35 R18
245/40 R18
255/35 R18
255/45 R18
265/35 R18
275/35 R18
225/35 R19
225/40 R19
235/35 R19
245/35 R19
245/40 R19
255/35 R19
255/40 R19
265/30 R19
275/30 R19
225/30 R20
225/35 R20
235/30 R20
245/30 R20
245/35 R20
255/35 R20
275/30 R20
275/35 R20
245/30 R22
265/30 R22
225/60 R17
225/60 R17
225/65 R17
235/65 R17
235/60 R18
245/65 R18
265/60 R18
Size
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Tire size may be indicated in two formats:
– metric (P255/45R18 103H)
– high flotation (30x9.5 R15 104 F C)
In the metric system, P - stands for the passenger vehicles (LT - for Light Trucks, ST - Special Trailer) with a width of 255 millimeters, aspect ratio (sidewall height) equal to 45% of the tire height. R means it is radially constructed with a diameter of 18 inches. 103 denotes the tire's load index and H determines the speed rating.
In the high flotation system, the first number (30) is the overall diameter of the tire, the second number (9.5) is the width in inches.

205/40 R17 84 W
225/60 R17 99 H SL
Utqg
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Uniform Tire Quality Grade Standards (UTQG) were designed to offer consumers with useful information about the treadwear, traction, and temperature capabilities of their tires in order to make better decisions when purchasing new tires.

N/A
500 A A
Max. load
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The maximum weight that a tire can carry is the greatest amount of weight it's designed to bear. Because load carrying capability is dependent on a tire's size and construction, as well as how much air pressure is actually utilized, maximum loads are measured with the tire inflated to an industry standard inflation pressure.

84 (1100 lbs)
99 (1709 lbs)
Max. speed
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The maximum speed that a tire with this type of tread can safely travel for an extended amount of time is indicated by the tire speed rating, which is usually shown by a letter or two.

W
H (130 mph)
Max inflation pressure
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The highest "cold" inflation pressure that a tire is meant to contain is its maximum inflation pressure.

N/A
44 | 27
Tire weight
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The tire weight is determined by the type and size of the tire. As the tread depth of the tire wears down over time, so does its weight.

N/A
27
Rim width range
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Tires may be used on rims of varying widths while still fulfilling their intended function.

N/A
6-8""
Meas. rim width
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The measuring rim width is the common industry minimum rim width at which a tire must be mounted to validate that it meets design specifications.

N/A
10/32""
Overall diam.
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The overall diameter of a tire is the outer diameter of the tire, measured in the center of the tread. This measurement is made without any load placed on the tire and after it has been properly mounted on its industry-assigned measuring rim and inflated to its test pressure after 24 hours.

23.46
27.63
Revs.per mile
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The revolutions per mile figure indicates the number of times a tire rotates during one mile's travel.

859.7/mi
729.95/mi
Country of origin
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The short name of the country where the given tire was manufactured.

N/A
CN
How tires look on cars
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Check out pics from car enthusiasts that mounted these tires on their vehicles.

The Kumho Solus KL21 provides better results for 10 test features out of 10 in total.

Specs & Options

Though in general one tire may look superior to the other one, we recommend you compare the available sizes for each model as well. Just choose the tire sizes from the dropdown menu. Upon comparing different sizes, you may find certain differences of both tires.

In terms of market coverage, the Nexen Nfera Su1 takes the lead. This tire is available in 47 sizes ranging from 15 inches to 22 inches.

See how these two tires compare against competitors

Nfera Su1

Nfera Su1 N/A

Solus KL21

Solus KL21 N/A

Discussion



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